package Filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

public class CourierFilter implements Filter{



	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
			HttpServletRequest httpRequest=(HttpServletRequest)request;
			HttpSession httpSession=httpRequest.getSession(false);
			if(httpSession != null
					&& httpSession.getAttribute("courier") != null){
				chain.doFilter(request, response);
			}else{
				request.getRequestDispatcher("/error").forward(request, response);
				return;
			}
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}

}
